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80 lines
3.3 KiB
Python
80 lines
3.3 KiB
Python
"""Tests for gateway code-skew detection (stale-checkout guard).
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Companion to ``tests/test_stale_utils_module_import.py``: that test proves the
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crash; these prove the guard that turns it into a clear "restart the gateway"
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message before a model switch can hit it.
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"""
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import pytest
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from gateway import code_skew
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@pytest.fixture(autouse=True)
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def _reset_boot_fingerprint(monkeypatch):
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"""Each test starts with no recorded boot fingerprint."""
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monkeypatch.setattr(code_skew, "_boot_fingerprint", None)
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class TestDetectCodeSkew:
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def test_no_boot_fingerprint_means_no_skew(self, monkeypatch):
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# Nothing recorded (e.g. non-git install) -> never a false positive.
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monkeypatch.setattr(code_skew, "_fingerprint", lambda: "git:refs/heads/main:def456")
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assert code_skew.detect_code_skew() is None
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def test_unchanged_checkout_is_not_skew(self, monkeypatch):
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monkeypatch.setattr(code_skew, "_fingerprint", lambda: "git:refs/heads/main:abc1234567890")
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code_skew.record_boot_fingerprint()
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assert code_skew.detect_code_skew() is None
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def test_drift_is_detected_with_short_revs(self, monkeypatch):
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monkeypatch.setattr(code_skew, "_fingerprint", lambda: "git:refs/heads/main:abc1234567890")
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code_skew.record_boot_fingerprint()
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monkeypatch.setattr(code_skew, "_fingerprint", lambda: "git:refs/heads/main:def4567890123")
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skew = code_skew.detect_code_skew()
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assert skew == ("abc1234567", "def4567890")
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def test_unreadable_current_rev_does_not_false_positive(self, monkeypatch):
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monkeypatch.setattr(code_skew, "_fingerprint", lambda: "git:refs/heads/main:abc1234567890")
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code_skew.record_boot_fingerprint()
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monkeypatch.setattr(code_skew, "_fingerprint", lambda: None)
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assert code_skew.detect_code_skew() is None
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def test_record_is_idempotent(self, monkeypatch):
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monkeypatch.setattr(code_skew, "_fingerprint", lambda: "git:refs/heads/main:first")
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code_skew.record_boot_fingerprint()
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monkeypatch.setattr(code_skew, "_fingerprint", lambda: "git:refs/heads/main:second")
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code_skew.record_boot_fingerprint() # must not overwrite the boot snapshot
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assert code_skew._boot_fingerprint == "git:refs/heads/main:first"
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class TestShort:
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def test_shortens_long_sha(self):
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assert code_skew._short("git:refs/heads/main:abcdef0123456789") == "abcdef0123"
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def test_keeps_unresolved_marker(self):
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assert code_skew._short("git:refs/heads/main:unresolved") == "unresolved"
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def test_passes_short_sha_through_untruncated(self):
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assert code_skew._short("git:HEAD:abc1234") == "abc1234"
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class TestModelSwitchSkewGuard:
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def test_guard_returns_none_without_skew(self, monkeypatch):
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from gateway import slash_commands
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monkeypatch.setattr(code_skew, "detect_code_skew", lambda: None)
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assert slash_commands._model_switch_skew_guard() is None
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def test_guard_message_names_revs_and_restart(self, monkeypatch):
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from gateway import slash_commands
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monkeypatch.setattr(code_skew, "detect_code_skew", lambda: ("abc1234567", "def4567890"))
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msg = slash_commands._model_switch_skew_guard()
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assert msg is not None
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assert "abc1234567" in msg
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assert "def4567890" in msg
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assert "hermes gateway restart" in msg
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